Revert[8] "replace SkXfermode obj with SkBlendMode enum in paints"

gm/hairmodes.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
 
 constexpr struct {
-    SkXfermode::Mode  fMode;
-    const char*         fLabel;
+    SkBlendMode fMode;
+    const char* fLabel;
 } gModes[] = {
-    { SkXfermode::kClear_Mode,    "Clear"     },
-    { SkXfermode::kSrc_Mode,      "Src"       },
-    { SkXfermode::kDst_Mode,      "Dst"       },
-    { SkXfermode::kSrcOver_Mode,  "SrcOver"   },
-    { SkXfermode::kDstOver_Mode,  "DstOver"   },
-    { SkXfermode::kSrcIn_Mode,    "SrcIn"     },
-    { SkXfermode::kDstIn_Mode,    "DstIn"     },
-    { SkXfermode::kSrcOut_Mode,   "SrcOut"    },
-    { SkXfermode::kDstOut_Mode,   "DstOut"    },
-    { SkXfermode::kSrcATop_Mode,  "SrcATop"   },
-    { SkXfermode::kDstATop_Mode,  "DstATop"   },
-    { SkXfermode::kXor_Mode,      "Xor"       },
+    { SkBlendMode::kClear,    "Clear"     },
+    { SkBlendMode::kSrc,      "Src"       },
+    { SkBlendMode::kDst,      "Dst"       },
+    { SkBlendMode::kSrcOver,  "SrcOver"   },
+    { SkBlendMode::kDstOver,  "DstOver"   },
+    { SkBlendMode::kSrcIn,    "SrcIn"     },
+    { SkBlendMode::kDstIn,    "DstIn"     },
+    { SkBlendMode::kSrcOut,   "SrcOut"    },
+    { SkBlendMode::kDstOut,   "DstOut"    },
+    { SkBlendMode::kSrcATop,  "SrcATop"   },
+    { SkBlendMode::kDstATop,  "DstATop"   },
+    { SkBlendMode::kXor,      "Xor"       },
 };
 
 const int gWidth = 64;
 const int gHeight = 64;
 const SkScalar W = SkIntToScalar(gWidth);
 const SkScalar H = SkIntToScalar(gHeight);
 
-static SkScalar drawCell(SkCanvas* canvas, sk_sp<SkXfermode> mode, SkAlpha a0, SkAlpha a1) {
+static SkScalar drawCell(SkCanvas* canvas, SkBlendMode mode, SkAlpha a0, SkAlpha a1) {
 
     SkPaint paint;
     paint.setAntiAlias(true);
 
     SkRect r = SkRect::MakeWH(W, H);
     r.inset(W/10, H/10);
 
     paint.setColor(SK_ColorBLUE);
     paint.setAlpha(a0);
     canvas->drawOval(r, paint);
 
     paint.setColor(SK_ColorRED);
     paint.setAlpha(a1);
-    paint.setXfermode(std::move(mode));
+    paint.setBlendMode(mode);
     for (int angle = 0; angle < 24; ++angle) {
         SkScalar x = SkScalarCos(SkIntToScalar(angle) * (SK_ScalarPI * 2) / 24) * gWidth;
         SkScalar y = SkScalarSin(SkIntToScalar(angle) * (SK_ScalarPI * 2) / 24) * gHeight;
         paint.setStrokeWidth(SK_Scalar1 * angle * 2 / 24);
         canvas->drawLine(W/2, H/2, W/2 + x, H/2 + y, paint);
     }
 
     return H;
 }
 
@@ skipping 36 matching lines @@
                 canvas->save();
                 for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); ++i) {
                     if (6 == i) {
                         canvas->restore();
                         canvas->translate(W * 5, 0);
                         canvas->save();
                     }
 
                     canvas->drawRect(bounds, fBGPaint);
                     canvas->saveLayer(&bounds, nullptr);
-                    SkScalar dy = drawCell(canvas, SkXfermode::Make(gModes[i].fMode),
+                    SkScalar dy = drawCell(canvas, gModes[i].fMode,
                                            gAlphaValue[alpha & 1],
                                            gAlphaValue[alpha & 2]);
                     canvas->restore();
 
                     canvas->translate(0, dy * 5 / 4);
                 }
                 canvas->restore();
                 canvas->restore();
                 canvas->translate(W * 5 / 4, 0);
             }
         }
 
     private:
         typedef GM INHERITED;
     };
 
     //////////////////////////////////////////////////////////////////////////////
 
     static GM* MyFactory(void*) { return new HairModesGM; }
     static GMRegistry reg(MyFactory);
 
 }